A Timeless Addition with Modern Benefits
Get Your DesignsOrangeries combine the classic appeal of traditional architecture with the performance of modern materials. With their brick pillars, high ceilings, and glazed roofs, they create a luxurious living space that feels more integrated than a conservatory yet brighter than a traditional extension. For homeowners in West Sussex, our orangeries offer a seamless way to expand living space without compromising on style or structural quality.
Whether you’re looking to build a tranquil home office, a spacious kitchen extension, or a relaxing family room, Britannia’s expertly crafted orangeries are a timeless investment. Our tailored designs work beautifully with both contemporary and period homes across West Sussex, adding long-term value and daily comfort.
Custom Designs to Suit Every West Sussex Home
No two orangeries should look or feel the same. That’s why we provide fully bespoke designs to match the unique character of your property. Whether you’re in a modern coastal town or a traditional village in West Sussex, our team will work with you to design an orangery that complements your architecture, layout, and lifestyle.
Whether you’re after a classic lantern roof or a bespoke tiled roof, matched with floor-to-ceiling windows, we’re ready to ensure that your vision comes to life.
From the size and layout to the choice of windows, doors, brickwork, and roofing, every aspect is customisable. Our design specialists bring years of local experience to every project, ensuring your orangery not only looks beautiful but also complies with any local planning permissions or building regulations that may apply in West Sussex.
Energy Efficiency and Year-Round Comfort
While orangeries are known for their stunning aesthetics, they’re also highly functional thanks to the advanced materials and glazing systems we use. Our orangeries are built to provide excellent thermal insulation, helping you stay warm in the winter and cool in the summer, letting you enjoy your new space all year round.
At Britannia Windows, we use high-performance double or triple glazing, insulated roof systems, and robust construction methods to maximise comfort and reduce energy bills. For homes across West Sussex, this means a usable space all year round, no cold draughts in winter and no stifling heat in summer.
These benefits make our orangeries an ideal extension option for West Sussex homeowners looking to boost their home’s energy performance and reduce environmental impact.
High-Security Features for Peace of Mind
We understand that extending your home also means maintaining your security. That’s why all of our orangeries are built with integrated security features for your peace of mind. From secure multi-point locking systems on windows and doors to toughened safety glass, every detail is designed with safety in mind.
Britannia Windows is proud to deliver orangeries that not only enhance your home’s beauty but also its security. Whether you’re based in a busy town or a more rural part of West Sussex, our commitment to quality ensures your space is protected day and night, from unwanted intruders or nosy neighbours.
Trusted Local Installation Across West Sussex
Britannia Windows has built a strong reputation across West Sussex for our commitment to quality, reliability, and customer satisfaction. From your initial consultation through to final installation, we handle every stage of your orangery project with care and professionalism.
Our experienced local installers know the area and understand the practical needs of homes throughout West Sussex. We always aim to minimise disruption during the build, while keeping you informed and in control at every step. After the project is complete, we’re always on hand for aftercare, repairs, or upgrades.
Join the many satisfied homeowners across West Sussex who have transformed their homes with stunning, long-lasting orangeries from Britannia Windows.
Range of Conservatory Roof Styles

Glass Roof

Glass Roof

Tiled Roof

Tiled Roof

Solid Roof

Solid Roof

Flat Roof

Flat Roof

Lantern Roof

Lantern Roof
Customisation Options

Black/Brown

Chartwell Green

Cream

Golden Oak

Irish Oak

Mahogany

Rosewood

Slate Grey

White

Anthracite Grey
Home Inspiration
Get 3 FREE designs in 2 simple steps.
Available Online, In-Store or At Home
With Britannia, you're never far away from expert service. Whether it's online, in-store or on-site, our staff are highly trained and can deliver an exceptional level of support and advice.

Online
Start an online quote with us today. Our friendly team will be on hand to help you with your needs.
Get a free online quote
In Store
You can also visit our showroom to se our orangeries in the flesh. Our friendly team will be on hand to help you.
Book a Showroom visit
At Home
You can also book an online consultation that ensures you get a design that's right for your needs.
Book a home visitFrequently Asked Questions
Take a look at some of our most asked questions that can help you with your orangeries. To learn more, get in touch with us today.
What's the difference between an orangery and a conservatory?
An orangery typically has a solid construction on its roof. What’s more, orangeries offer more privacy, resulting in a safe and comfortable environment.
Are they Building Regulation compliant?
Our orangeries are supplied by market leaders Ultraframe. As a result, they are designed to comply with the latest Building Regulations.
Do you have a showroom?
We have a few showrooms that you can visit in Bristol, Clevedon and across the South West. Our team is on hand to help you find an orangery that suits your needs.
Happy Customers
Meg Welch
Great job of our new front door. They couldn’t have been more helpful and even fitted earlier than originally planned. Also gave great aftercare advice and at a very reasonable price! Would 100% recommend.
Annette Clemons
Cannot recommend Britannia Windows enough! Joe & Keith, the installers were great – explained what was to be done, showed me everything I needed to know upon completion, very considerate & tidied up really nicely. Very friendly guys who are an asset to the team!!
I LOVE my new windows & door. Such an improvement.
Rachel Godfrey
We have been extremely pleased with Britannia’s service. From the initial quote through to installation they were great and really easy to communicate with. We had our conservatory roof replaced and they were by far the least pushy and most competitive in terms of pricing.
We can definitely recommend their services and will likely be returning again soon for a new front door!
Peter Burgess
Fantastic job from initial phone call through to final tidy-up.
Britannia provided great advice before purchasing my new windows and fitted them to a high standard being punctual and polite throughout.
No request was a problem and I will definitely be using them again and would recommend to friends and family.
Jerry G
Wow a fantastic job by both sales team and fitting team.
Sam provided excellent service and answered any questions that we had. Luke, Dave, Keith and Joe did a fab job at fitting the windows and doors. Never having had anything like this done before I was a little nervous but the guys were clean and tidy and the outcome is amazing.
Would highly recommend.
